Combined supplemental gas reservoir and burner.



J. M. GILBERT. COMBINED SUPPLEMENTAL GAS RESERVOIR AND BURNER.

APPLICATION FILED APR. 23, 1914.

3 SHEETSSHEET 1.

Patented Oct. 13, 1914 aims?? THE NORRIS PETERS CO. PHOTO LITHQ. WASHINUION. D L

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8 vwe ntoz Patented Oct. 13, 1914.

3 SHEETfi-SHEET 2.

J/7Z. Qz'ier? a tfmmup I J. M. GILBERT. COMBINED SUPPLEMENTAL GAS RESERVOIR AND BUR APPLICATION FILED APR.23, 1914.

THE NORRIS PETFRS Ca. PHOTO-LITHCL, WASHINGTON uv J. M. GILBERT. COMBINED SUPPLEMENTAL GAS RESERVOIR AND BURNER. APPLICATION FILED APR. 23, 1914.

1, 1 1 3,326. Patented Oct. 13, 1914.

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i of blow torch in connection with which my UNITED STATES "PATENT OFFICE.

JAMES MADISON GILBERT, OF DALLAS, TEXAS.

COMBINED SUPPLEMENTAL GAS RESERVOIR AND BURNER.

' Application filed April 23,

To all whom it may concern:

Be it known that I, J AMES M. GIIBERT, a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Combined Supplemental Gas Reservoirs and Burners; and I do declare the following to be a full, clear, and exact'description of the invention, such as will enable others skilled in the art to which it'appert-ains to make and use the same.

My invention relates broadly to improvements in gas burners and more particularly to those which are primarily designed for use in connection with gas blow torches.

The primary object of the invention is to provide a device of this character which may be used to great advantage with natural gas and which will effectually equalize the pressure thereof, thus producing a steady flame. In carrying out the above end, I provide a gas supply pipe, a pressure pipe withinthe same and projecting from its end, a supplemental gas reservoir or chamber surrounding thevdischarge end of said supply pipe and a perforated plate closing the outer end of said receptacle and having a central opening for the reception of the pressure or blow pipe.

A secondary object of the invention is to construct the reservoir in such a manner as to render its interior readily accessible for the purpose of applying a pressure checking device to be described.

A still further object of the invention is to construct the entire device in the most simple manner consistent with its correct op-. eration.

With these objects in view, theinvention resides in certain novel features of construction and combination herein described and claimed and shown in the drawings wherein:

Figure 1 is a side elevation of one form invention may be employed; Fig. 2 is a vertical longitudinal section through the sup plemental reservoir and burner and portions of the structure illustrated in Fig. 1; Fig. 3 is a vertical transverse section on the line 3-3 of Fig. 2; Figs. 1 and 5 are horizontal sections taken; respectively upon the lines l 1 and 5-5 of Fig. 2; Fig. 6 is a vertical section through the reservoir and a portion of its supporting structure showing the manner in which the same may be used with- Specification of Letters Patent.

Patented Oct. 13, 1914. 1914. Serial No. 834,001.

out the pressure checking device illustrated in the preceding figures; Fig. 7 is a side elevation of a form of blow torch similar to that shown in Fig. 1 and showing the application of my invention thereto; Fig. 8 is a side elevation of a dentists furnace showing the manner in which my invention may be employed in connection therewith; Fig. 9 is a plan view of a portion of the parts shown in Fig. 8; Fig. 10 is a side elevation partly in section showing still another application of my invention; Fig. 11 is an end view of the parts shown inFig. 10; Fig. 12 is a View similar to Fig. 10, showing the manner in which the supplemental reservoir and burner may be constructed for the purpose of supporting a flame spreading screen; and Fig.

13 is a detached plan View of the screen and through which and the plate 2, a bore 5 is provided, said bore being threaded at its inner end as clearly shown at 6. The screw threads 6 are provided for the attachment of a gas checking device to 'be'desc'ribed. The outer end of the-receptacle 1, is closed by an end plate 7 which is provided witha central opening 8 alining with the bore 5 and with a number of gas discharge perforations 9 which surround said opening 8.

In Figs. 1 to 6 inclusive, I have shown the parts so far described as carried by a blow torch which includes a T coupling 10 into one end of which the boss 4 is threaded,

a valvecasing- 11 being threaded into the opposite end of said coupling andcarrying a pressure or blow pipe 12, the latter passingloosely through the head of the coupling 10 and through the bore 5, the outerend of said pipe 12 being preferably reduced and inserted in the central opening 8 of the plate 7. The shank of the coupling 10 is internally threaded for the reception of a gas conducting pipe 13 which is threaded at its opposite end, into an upright cylindrical member 14, the latter being provided with a longitudinal bore 15 opening into which is an air port 16 which is regulated by a perforated sleeve 17 which revolves on said cylindrical portion 14.

Spaced a suitable distance from the JUDG- ture of the pipe 13 with the member 14 and communicating with the bore 15, is a gas supply pipe 18 and a pressure conducting pipe 19, the free end of the latter being threaded into the base of a cone-shaped valve 20, the latter being rotatably mounted within the valve casing 11 and held in position by means of a screw 21 which passes through a washer 22 and into the smaller end of said valve, the washer overlying a portion of the casing and thus causing said valve to be tightly seated when said screw is tightened, but allowing the same to be rotated in the casing and upon the threads of the pipe 19, when said screw is loosened, it being understood that said pipe 19 possesses ample flexibility to allow this move ment. The end of the valve 20, into which the pipe 19 is threaded, is preferably provided with a knurled flange 23 by means of which this rotation is facilitated.

As most clearly seen in Fig. 2, the valve casing 11 is provided with a longitudinal bore 24, the blow pipe 12 being carried by the inner end thereof while a pressure supply pipe 25 is threaded into the opposite end thereof, said pipe having its free end located at a suitable point and normally closed by a screw cap 26 which latter may be removed when it becomes necessar to conduct compressed air through said pipe 25 by means of a tube 27 which may lead from any suitable source of supply. The construction of the valve is also clearly shown in Fig. 2 and it will be readily seen that the same is of hollow construction, the pipe 19 communicating with its interior as do the ends of the bore 24, the latter communication being established through a pair of openings 28, the relation of which in respect to said bore 24, may be varied by rotation of the valve 20, thus increasing or diminishing the amount of pressure discharged frcm the end of the pressure or blow pipe. In the operation of this form of the invention, gas under pressure is passed through the tube 18 by means of a flexible hose 29 or other'suitable connection, said gas now flowing through the bore 15 and drawing in the proper amount of air from the port 16, the mixture now continuing through the pipe 13, the bore 5 and into the receptacle 1 from which it will discharge through the openings 9 at which it may be ignited. On account of the positioning of the pipe 19, an appreciable amount of pressure will pass therethrough and into the valve 20 from which it will be discharged through'the bore 24 and the blow pipe 12, this pressure now acting to force a jet of flame'from the receptacle and burner 1. If it becomes necessary to increase the pressure, discharged from the tube 12, it is simply necessary to rotate the valve 20 in such a manner as to increase the size of the openings through which the gas may pass it being understood that the force of the gas passing through said openings increases as the size of said openings is increased. If it becomes necessary to provide a still stronger blast for projecting the jet of flame from the burner, the cap 26 may be removed and the tube 27 applied, compressed air being now conducted through said tube 27 and the pipe into the valve casing 11 from which it will be discharged through the outer end of the'blow pipe 12.

It becomes expedient in the proper operation of the device, to provide means where by the amount of gas, fed to the interior of the casing 1, may be controlled. For this purpose I have provided a suitable valve 30 for the port 15, the latter being operated by means of a spring actuated thumb lever 31 whose movement is limited in one direction by means of a set screw 32. This set screw also serves as a means for locking the valve in totally or partially open position, the spring 33 holding said lever 31 normally in contact with the lower end of said screw.

In Fig. 7 I have illustrated my invention as applied to a torch of similar construction to the form previously described, this form of torch being in fact, identical withsaid previously described form with the exception that the valve mechanism, the valve 20 and the parts coacting therewith, and the air pressure pipe are omitted, a supporting handle 34 being attached to the upright member 14. For the sake of clearness and brevity, I have applied the same reference numerals to the common features of the form previously described and the form shown in 7.

In Figs, 10 and 11, I have shown my improved supplemental reservoir and burner as supported by a T-coupling 10 which carries a valve 35 and an air mixer 36, said valve 35 carrying a pressure or blow pipe 12 which passes through the head of said coupling, through the bore 5 and has its free end passing through the central opening 8 in the plate 7. The upper end of the valve 35 communicates with a coupling 37 into which gas under pressure is fed by means of a supply pipe 37 the three-way 4 latter being connected to a gas supply pipe 38 by means of a- T-coupling 39, a valve 40 being interposed between the air mixer 36 and said coupling 39. stood that gas, flowing into the coupling 37 will be discharged through the pipe 12. A portion of this gas however, flows through a valve 41 and is discharged from the in- It is to be under-f a the cap plate, said plate I have wardly curved end of a supplemental blow pipe 42, the latter being so positioned as to force the jet of flame laterally.

In Fig. 12 I have illustrated a structure similar to that illustrated in Figs. 10 and 11 with the exception that the three-way coupling 37, the supplemental blow pipe 12, and the valves 35 and ll are omitted, the gas supply pipe 3'? being directly connected with a plug 4-3 which is carried by the T- coupling 10" and which carries the pressure or blow pipe 12', the latter having precisely the same location as in the figures previously described. In Fig. 12, I have shown the cylindrical portion3 as provided with a reduced portion 3 which is provided forthe reception of an attaching ring Mwhich is employed for the purpose of supporting a flame spreading screen 4E5, the screen and ring being connected by arms 46 which are formed integrally with said ring.

Coming now more particularly to the embodiments illustrated in Figs. 8 and 9, the construction of the cylindrical portion 8 of the receptacle 1 and its end plate 7, are identical with the structure previously described. In applying the invention to the remaining features illustrated in these comes expedient to alter the construction of at 2 and having the interior of its bore 6' threaded throughout its length for the reception of a gas supply pipe 417 which is rigidly supported by a standard 48, the free end of said pipe 47 being inolosed by the receptacle 1, and charge perforations 49. In this application, the blow pipe 12 is carried by a T-coupling 50 into which a pair of gas tubes 51 and 52 discharge. This type of torch is preferably employed in connection with a dentists furnace 53, said torch and furnace being here shown as supported upon a base 54:.

In the various figures of the drawings, it will be noted that the inner end of the bore 5 is threaded as indicated at 6, this provision being-made on all of the forms with the exception of that'illustrated in Figs. 8 and 9.

found that at times it becomes necessary to provide means for checking the direct discharge of gas through the outlet openings 9, a sleeve 55 being threaded into said end of the bore and having, flange 56, a number of discharge openings 57 being provided between the inner end of the cap 2 and said flange. This provision causes the gas to more tacle 1 before discharging therefrom, thus securing a supplemental supply of gas which feeds the flame at periods in which the gas pressure decreases. Thus it will be seen that a steady flame may be obtained at all times.

By the provision of the receptacles 1 which perform the above set forth functions, the

invention is particularly well adapted for sure is obtained therewith.

' cup-shaped member figures, it bei being here indicated having a number of dis on its lower end, a.

readily fill the recepopposite end of the reservoir.

use in connection withnatural gas, it being" a well known fact that a veryuneven pres- By the provision of my invention however, this chiefdifflculty is overcome.

Having thus described my invention, what I claim as new. and desire to secure by LettersPatent is j a 1. In a device of the character described, a gas supply pipe, a pressurepipe passing therethrough and projecting fromthe end thereof, a cap plate carried by the gas supply pipe, and a cup-shaped member carried by the cap plate and having, in its end, an opening through which the pressure pipe passes and a number of gas discharge openings whereby a combined burner and supplemental gas reservoir is provided.

2. In a device of the character described, a

gas supply pipe, a pressure pipe passing therethrough and projecting from the end thereof,a cap plate having a boss and an opening therein, the latter being threaded into the end of the gas supply pipe, and a surrounding the pressure pipe and carried by thecap plate, the end of said member having an opening through which the pressure pipe passes and a number of gas discharge perforations, the opening in the cap plate being of greater diameter than the pressure pipe passing therethrough.

3. In a device of the character described, a cylindrical gas reservoir having a removablev end plate provided with an external 1 boss and a bore extending throughthe boss and the plate and having its inner end threaded for the reception of a spreader, the opposite end of the reservoir having a central opening and a number of gas discharge openings surrounding the same, a gas supply pipe threaded around said boss, and a pressure pipe passing loosely through thegas pipe and the bore in the boss and entering the opening in the opposite end of the reservoir.

4. In a device of the character described, a cylindrical gas reservoir having a remov: able end plate provided with an external boss and a bore extending through the boss and the plate and having its inner end threaded for the reception of a spreader, a sleeve threaded into said inner end andhaving a lateral flange and a number of dis-. charge perforations above the same, the opposite end of the reservoir having a central opening and .a number of gas disa gas supply pipe charge perforations, threaded around said boss, and a pressure pipe passing :loosely through the gas pipe and thebore and entering the opening in the 5. In adevice of the characterdescribed, a combined receptacle and burner including a cylindrical casing having one of its ends promovable cover vided With a central opening and with a number of perforations surrounding the same, its remaining end being closed by a replate having a central boss and a bore therein, a T-coupling threaded around said boss, a valve casing in communication With the interior of the T coupling, a hollow conical valve in said casing and having ports establishing communication between its interior and the interior of the casing, an air pressure pipe threaded into said casing above the valve, a gas and air pressure pipe threaded into the discharge end of said valve, a gas supply pipe entering the shank of said T-coupling, means Whereby said valve may be rotated, and means for retaining the same within its seat.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- DGSSBS.

' DR. JAMES MADISON GILBERT. Witnesses:

M. L. ROBERTSON, BEN GARNER.

Copies 01 this patent may be obtained for five cents each, by addressing the Commissioner of Patents,' Washington, D. G. 

